What fabrics are best for breathable and comfortable casual dresses?

I visited a clothing shop to buy casual dresses two days ago I wanted breathable feel I wanted soft fabric I wanted daily comfort but I got confused fast Some dresses look very nice but feel heavy Some feel soft but trap heat Some colors are good but fabric is not clear I try one dress and it looked okay but not comfortable for long wear I could not trust them I could not decide confidently

Then I visited another shop in the same area Some dresses had cotton feel Some had linen style Some had rayon blend Some looked good but price was high I asked worker and she said fabric matters more than design for daily comfort I remembered one dress I bought before that looked stylish but felt sweaty in hot weather That made me hesitate even more I kept checking but still unsure about real comfort and breathability

To check more variety and options while scrolling many online marketplaces including alibaba I saw many fabric types for casual dresses Some say cotton Some say linen Some say rayon Some say chambray Some say bamboo blend This made me excited but also confused again Now I am thinking fabrics like Cotton Linen Rayon Chambray and Bamboo fabric are best for breathable casual dresses I think cotton and linen feel most safe for hot weather but still I am not fully sure which fabric gives best all day comfort and style what would you choose for summer casual dress fabric